Locomotive.



H. E. SEAMAN.

LOCOM0 TIVE.. APPLICATION FILED JULY 1. 1915.

1,1 855m Patented May 30, 1916.

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THB COLUMBIA PLANOGRAPH CO-. WASHINGTON, D. c.

H. E. SEAMAN.

LOCOMOTIVE.

APPLICA'HON FILED JULY 1. IBIS- Patented May 30,1916.

2 SHEETS-SHEET 2.

a" win attozmcl TTTT HARRY E. SEAMAN. 0F PHILADELPHIA, PENNSYLVANIA.

LOGOMOTIVE.

Specification of Letters Patent.

Patented llllay 30 1216.

Application filed July 1, 1915. Serial No. 37,610.

To all u; hom it may concern Be it known that I, HARRY E. SEAMAN, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Locomotives, of which the following is a specification.

My invention relates to improvements in locomotives, and more particularly to improved means for returning a large part of the smoke and gases from the smoke box into the fire chamber to be consumed and not wasted as is generally the case.

A further object is to provide an improved construction of petticoat pipe lo;- cated in the smoke box in line with the exhaust nozzle and blower which operates to divide the smoke and gases causing a portion thereof to escape through the stack,,but compelling the greater portion to return to the fire box for consumption.

A further object is to provide improved means for controlling the draft of the return of the smoke and gases and admitting air to the returning smoke and gases to facilitate combustion as well as induce the draft.

With these and other objects in view, the invention. consists in certain novel features of construction and combinations and arrangements of parts as will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings: Figure 1 is a view in side elevation partly broken away illustrating my improvements. Fig. 2 is a top plan view of Fig. 1. Fig. 3 is an enlarged fragmentary view in longitudinal section on the line 33 of Fig. 1. Fig. 4: is an enlarged view in transverse section through the smoke box illustrating my improved construction of petticoat pipe. Fig. 5 is a view in transverse section on the line 55 of Fig; 41, and Fig. 6 is an enlarged detail sectional view illustrating the arrangement of steam nozzle to induce a draft in the smoke return pipe.

1 represents a locomotive having the ordinary fire box 2 at its rear end and smoke box 3 at its front end.

4 is the smoke stack which is secured in the top of the smoke box in line with the exhaust nozzle 5 and blower 6.

7 represents my improved petticoat pipe which is provided at its upper end with a flange 8 bearing against a flange 9 on the lower end of the stack and secured to the lower end of the stack by bolts 10 as indicated in dotted lines in Fig. 1.

My improved petticoat pipe 7 comprises a casting having a central flue 11, and two outer fines 12. These outer lines are separated by partition walls 13, and gradually change their shape from semi-cylindrical cross sections into cylindrical nipples 14: which extend through the wall of the smoke box, and are connected by pipes 15 with openings 16 in the rear wall of the fire box.

The central flue 11 gradually increases in diameter until it reaches the full diameter of the stack, but terminates at a point removed from the lower end of the petticoat pipe which lower end is flared outwardly as shown at 17 so as to induce the draft caused by the exhaust from cylinders.

As shown in Fig. 5, the fines 11 and 12 are of substantially the same area in cross section, so that while the center flue 11 re ceives the direct line of steam from the ex haust, most of the smoke and gases will be forced through the fines 12, and while I do not limit myself to any particular proportion, I believe about eighty per cent. of the smoke and gases will be returned to the fire box, this, of course, resulting in a great saving of fuel which would be otherwise lost, and also reducing to a minimum the discharge of cinders and sparks.

The pipes 15 are provided with air inlet funnels 18 which communicate with open- .ings 19 in the pipes, and the entrances to these funnels are controlled by dampers 2O hinged at one end as shown at 21, and con .nected by rods 22 with operating hand levers 23, so that they can be moved to open or closed position as desired by the engineer. These dampers are preferably swung inwardly to open them, and allow air to flow into the pipes. This suction of air is induced by the movement of the locomotive, and the air not only increases the draft, but

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also supplies a certain amount of oxygen I which aids in the combustion. The forward or closing movement of the dampers is limited by stops 24; as shown clearly in Fig. 3.

As an additional means for controlling or supplying draft, I provide steam nozzles 25 projectingrearwardly in the pipes 15 and connect these nozzles by pipes 26 with the steam supply pipes 27 which supply steam to the blower 6, hence whenever the blower is operated, the steam is directed rearwardly in the pipes 15, so that by this means the return of smoke and gases can be had while the engine is standing as well as running, and I can admit air or steam, or both, just as may be desired to produce the best results.

Various slight changes might be made in the general form and arrangement of parts described without departing from my invention, and hence I do not limit myself to the precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

Having thus described my invention, what I claim as new and desire'to secure by Letters Patent is:

1. The combination with a locomotive having a fire box at one end, a smoke box at its other end, a stack in the upper part of the smoke box, and a blower in the lower part of the smoke box in line with the stack,

of a petticoat pipe secured to the stack and located in the smoke box, said petticoat pipe divided into a central flue of greatest diameter at its upper end and communicating directly with the stack, and side flues independent of the central flue communicating at their lower ends with the smoke box, and pipes connecting the side flues with the -fire box, substantially as described.

2. The combination with a locomotive having a fire box at one end, a smoke box at its other end, a stack in the upper part of the smoke box, and a blower in the lower part of the smoke box in line with the stack, of a petticoat pipe secured to the stack and located in the smoke box, said petticoat pipe divided into a central flue communicating with the stack, said central flue of general cylindrical form throughout its lower portion and increasing in diameter at its upper end to the diameter of the petticoat and secured directly to the stack, and side fiues in-- dependent of the central flue communicating at their lower ends with the smoke box, pipes connecting the side. flueswith the fire box, air entrance funnels communicating Copies of this patent may be obtained for five cents each, by addressing the with the said pipes, and dampers controlling the entrance of air to the funnels, substantially as described.

3. The combination with a locomotive having a fire box at one end, a smoke box at its other end, a stack in the upper part of the smoke box, and a blower in the lower part of the smoke box in line with the stack, of a petticoat pipe secured to the stack and located in the smoke box, said petticoat pipe divided into a central flue communicating with the stack, said central flue of general cylindrical form throughout its lower portion and increasing in diameter at its upper end to the diameter of the petticoat and secured directly to the stack, and side flues independent of the central flue. communicating at their lower ends with the smoke box, pipes connecting the side flues with the fire box, and steam nozzles discharging rearwardly in said pipes, substantially as described.

4. The combination with a locomotive having a smoke box at one end, and a nozzle and blower in the lower portion of the smoke box, of a petticoat pipe secured to the Stack and located in the smoke box of the locomotive, said petticoat pipe comprising a casting having a central flue communicating with the stack, said central flue of general cylindrical form throughout its lower portion and increasing in diameter at its upper end to the diameter of the petticoat and secured directly to the stack, and fines outside of the central flue communicating with the smoke box, said petticoat pipe at its lower end outwardly flared and located in line with the exhaust nozzle and blower in the bottom of the smoke box, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HARRY E. SEAMAN.

Witnesses:

C. E. Po'r'rs, MARIE JACKSON.

Commissioner of Patents,

Washington, D. G. 

